import axios from 'axios'
import { MessageBox, Message } from 'element-ui'
import store from '@/store'
import { getToken } from '@/utils/auth'

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 5000 // request timeout
})

// 请求拦截器
service.interceptors.request.use(
  config => {
    // 在发送请求之前做一些事情

    if (store.getters.token) {
      // 让每个请求都携带令牌
      // ['X-Token'] 是自定义标题键
      // 请根据实际情况修改
      config.headers['X-Token'] = getToken()
    }
    return config
  },
  error => {
    // 做一些请求错误的事情
    console.log(error) // for debug
    return Promise.reject(error)
  }
)

// 响应拦截器
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
  */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data
    // 如果自定义代码不是20000，则判断为错误。
    if (res.code !== 20000) {
      Message({
        message: res.message || 'Error',
        type: 'error',
        duration: 5 * 1000
      })
      // 50008：非法令牌； 50012：其他客户端登录； 50014：令牌过期；
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm('您已退出，您可以取消停留在此页面，或重新登录', '登录过期', {
          confirmButtonText: '重新登录',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload()
          })
        })
      }
      return Promise.reject(new Error(res.message || 'Error'))
    } else {
      return res
    }
  },
  error => {
    const res = error.response.data
    if (res.code === 502) {
      Message({
        message: res.message || '程序运行异常',
        type: 'error',
        duration: 5 * 1000
      })
      return Promise.reject(error)
    }
    // 如果网络404
    if (error.message === 'Network Error') {
      Message({
        message: '网络连接异常请稍后再试',
        type: 'error',
        duration: 5 * 1000
      })
      return Promise.reject(error)
    }
    console.log('err' + error) // for debug
    Message({
      message: error.message,
      type: 'error',
      duration: 5 * 1000
    })
    return Promise.reject(error)
  }
)

export default service
